.\"	$OpenBSD: getfh.2,v 1.18 2015/01/19 15:54:11 millert Exp $
.\"	$NetBSD: getfh.2,v 1.7 1995/10/12 15:40:53 jtc Exp $
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.\"	@(#)getfh.2	8.1 (Berkeley) 6/9/93
.\"
.Dd $Mdocdate: January 19 2015 $
.Dt GETFH 2
.Os
.Sh NAME
.Nm getfh
.Nd get file handle
.Sh SYNOPSIS
.In sys/param.h
.In sys/mount.h
.Ft int
.Fn getfh "const char *path" "fhandle_t *fhp"
.Sh DESCRIPTION
.Fn getfh
returns a file handle for the specified file or directory
.Fa path
in the file handle pointed to by
.Fa fhp .
This system call is restricted to the superuser.
.Sh RETURN VALUES
.Rv -std
.Sh ERRORS
.Fn getfh
fails if one or more of the following are true:
.Bl -tag -width Er
.It Bq Er ENOTDIR
A component of the path prefix of
.Fa path
is not a directory.
.It Bq Er ENAMETOOLONG
A component of a pathname exceeded
.Dv NAME_MAX
characters, or an entire pathname (including the terminating NUL)
exceeded
.Dv PATH_MAX
bytes.
.It Bq Er ENOENT
The file referred to by
.Fa path
does not exist.
.It Bq Er EACCES
Search permission is denied for a component of the path prefix of
.Fa path .
.It Bq Er ELOOP
Too many symbolic links were encountered in translating
.Fa path .
.It Bq Er EPERM
The effective user ID is not the superuser.
.It Bq Er EFAULT
.Fa fhp
or
.Fa path
points to an invalid address.
.It Bq Er EIO
An I/O error occurred while reading from or writing to the file system.
.It Bq Er EINVAL
A portion of
.Fa path
refers to a remote file system.
.It Bq Er EOPNOTSUPP
A portion of
.Fa path
refers to a remote file system.
.El
.Sh SEE ALSO
.Xr fhstat 2
.Sh HISTORY
The
.Fn getfh
function first appeared in
.Bx 4.4 .
